IBM 240 manual Messages, Action

Troubleshooting charts

No

error

codes

or

messages

Problem

Action

The

screen

is

blank

andIf

a

Power-on password is

set,

press

any

key

to display

the

power-on

password

you

don't

hear

any

prompt,

and

then

type

the

correct

passwordEnter . and

press

beeps.

If

a

power-on password is

set

but

does

not appear,

the

brightness control might

Note:

If

you

are

notbe

set

to

minimum

brightness.

Adjust

the

brightness.If

the

screen still

remains

sure

whether

blank,

make

sure

that:

you

hear

any

The

battery

pack

is

installed

correctly.

beeps,

turn the Ÿ

computer

off;

Ÿ

The

AC

Adapter

is

connected to the computer and the power cord is plugged

then

turn

it

on

into

a

working

electrical

outlet.

and

listen

again.Ÿ

The

computer

power

is

on.

(Press

the

power

switch

again

for

confirmation.)

If

you

are

using

an

the

screen

still

remains

blank, have

the

computer serviced.

external

monitor,

go

If

to

“External monitor

problems”

on

page 104.

The

screen

is

blank

andHave the

computer

serviced.

you

hear

a

continuous

beep, or two or more

beeps.

Only the cursor appearsReinstall. your operating system, and power on the computer.

If you still have a problem, have the computer serviced.

92 ThinkPad 240 User's Reference